Concerns about a killer tick virus spread nationwide over the weekend as health authorities reported more patients who are thought to have been infected.

The Korea Centers for Disease Control said on Saturday that a 61-year-old woman in Gwangju has shown symptoms of the tick virus that has killed two people in Korea so far.

The state-run disease control agency last week confirmed that two people in Gangwon Province and Jeju died after showing signs of a high severe fever with thrombocytopenia syndrome or SFTS.

<YONHAP PHOTO-0830> '야생 진드기' 안내장 보는 제주 야영객 (서귀포=연합뉴스) 고성식 기자 = 제주도 서귀포시 성산읍 모구리 야영장을 찾은 야영객들이 24일 제주도로부터 받은 '야외 활동 시 야생 진드기 주의사항'을 담은 안내장을 차근히 읽어보고 있다. 제주도는 올레길과 야영장 등을 찾는 관광객과 도민에게 안내장을 나눠주고 통행로 주변에 안내문을 설치해 주의를 당부하기로 했다. 2013.5.24 koss@yna.co.kr/2013-05-24 14:41:35/ <저작권자 ⓒ 1980-2013 ㈜연합뉴스. 무단 전재 재배포 금지.>
A camper in Jeju reads a guideline for tick-borne virus prevention Friday.   Yonhap News
'야생 진드기' 안내장 보는 제주 야영객 (서귀포=연합뉴스) 고성식 기자 = 제주도 서귀포시 성산읍 모구리 야영장을 찾은 야영객들이 24일 제주도로부터 받은 '야외 활동 시 야생 진드기 주의사항'을 담은 안내장을 차근히 읽어보고 있다. 제주도는 올레길과 야영장 등을 찾는 관광객과 도민에게 안내장을 나눠주고 통행로 주변에 안내문을 설치해 주의를 당부하기로 했다. 2013.5.24 koss@yna.co.kr/2013-05-24 14:41:35/ <저작권자 ⓒ 1980-2013 ㈜연합뉴스. 무단 전재 재배포 금지.> A camper in Jeju reads a guideline for tick-borne virus prevention Friday. Yonhap News

The virus is spread by ticks, and causes fever, vomiting and platelet and white blood cell levels to drop. The tick virus has a fatality rate of about 6 percent.

Another man in Busan died after showing symptoms of the virus on Wednesday, officials said.

The Gwangju woman is suspected to have been bitten by a tick during her trip to a mountainous area in Naju, South Jeolla Province on May 17 and currently is receiving treatment. She started to vomit and had a fever a week after the trip, said the KCDC officials adding that they will trace the infection route.

The Gwangju case is the latest in a series of reports of patients suspected of having the tick-borne virus. Patients suspected of being infected with the deadly virus have been found in South and North Chungcheong Province, Gangwon and Jeju.

Amid fast-spreading fear of the virus, the government released guidelines to prevent further infection. The Ministry of Agriculture, Forestry and Food said people, particularly farmers, need to minimize skin exposure and not nap lying down in fields. The ministry also advised people to refrain from going to the toilet in hedges or other bushes and take shower immediately after spending time outdoors.

By Cho Chung-un ()


koreaherald@heraldcorp.com